SynthesisFrontiers in oncology2025
Real-world effectiveness and safety of CDK4/6i in elderly and BIPOC patients with HR+/HER2- advanced/metastatic breast cancer: an updated systematic literature review.
Synthesis in Frontiers in oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Review
- Cutting-edge advances in endocrine therapy for breast cancer (Review).Oncology letters · 2026Review
- CCND3 Suppression Ameliorates β-Thalassaemia in a Murine Disease Model: A Potential Therapeutic Strategy.Cells · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background and aim: The HR-positive/HER2-negative (HR+/HER2-) advanced/metastatic breast cancer (a/mBC) treatment landscape has advanced with cyclin-dependent kinase 4/6 inhibitors (CDK4/6i), yet outcome disparities persist, particularly among older patients and black, indigenous, and people of color (BIPOC) communities. Emerging real-world evidence (RWE) since 2021 highlights the need for this updated systematic literature review. Methods: Searches were conducted in MEDLINE Results: This review included 23 unique studies. In comparisons of CDK4/6is among elderly patients, palbociclib and ribociclib demonstrated similar effectiveness, whereas data for abemaciclib were limited. These findings aligned with single-arm studies and CDK4/6i versus endocrine therapy (ET) comparisons, which demonstrated superior survival benefits for CDK4/6is over ET alone in both elderly and BIPOC subpopulations. Despite higher discontinuation rates and neutropenia in both subpopulations, survival outcomes remained unaffected in studies assessing effectiveness and tolerability. Conclusions: This review highlights that CDK4/6is are effective and well-tolerated in elderly and BIPOC patients with HR+/HER2- a/mBC. It also underscores the expanding body of RWE supporting CDK4/6is, highlighting their global use and key role in guiding clinical decisions, particularly for patient subpopulations underrepresented in clinical trials.
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Registered trials
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